Joint-packing.



W. J. KNOX.

JOINT PACKING.

APPLICATION FILED MAY 9 1902 91 1 ,822 Patented Feb. 941909.

BSHEETS-SHEET I.

WITNESSES W. J. KNOX.

JOINT PACKING.

AIPLMAIIUN nun MAY 9.10m

Patented Feb 9, 1909 INVENTOR W. J. KNOX.

JOINT PACKING.

APPLICATION FILED Mu 1908,

91 1,822, Patented Feb. 9, 1909. I 3 SHEETS-SHEET 3. jZ JT WITNESSESmvsu'ron fi QU U Q/ Cit UNITED STATES PA.I71*INT OFFICE.

WILLIAM J. KNOX, OF DUBOIS, PENNSYLVANIA, ,.l:"- -1(i}UIL OF ONE-FOURTHTO DAVID M. KNOX, OF DENVER, COLORADO.

OINT-PACKING.

Specification of Letters Patent.

Patented Feb. 9, 1909.

Applicqhion filed May 9, 1908. Serial No. 431,916.

To all whom it may concern:

Be it known that 1 WILLIAM J. KNOX, a citizen of the United States,residing at Dubois, in the county of ()learfield and State olPennsylvania, have invented certain new and useful Improvements inJoint-Parking, of which the following is a spcrilication.

The invention relates to paclzin tor mak ing tight joints betweenopposing Fa es of all descriptions; and has for its priuci nl objects;the revision of an improved 'orm ol aching w erein an elastic Contactand pcr voct joint is secured under varying conditions of heat and)rossure; the provision of a packing ada te' to resist chemical actionand capable 0 application to a wide variety of uses; and the provisionof a packing whose resilient )ropert ice are in no way atleoted orimpaired by heat. Certain embodiments oi the invention are illustratedin the accompanying dnrwings, wherein Figure 1 is a section showing oneapplication oi one form ol the packin Figure 2 a partial side 0 ovationand partial longitudinal section through the packmg or gasket 01' Figure1, the ring joint for the ends being shown,

Figure 3 is a section on the'line Ill-III of Figure 2,

Figures 4 and 5 are sectional views of a modified term of packing.

Figures 6 and 7 are plan and sectional views rcspcctivclv oi' a gasketembodying the invention wherein one spring coil is employed,

Figures 8 and 9 ere plan and sectional views res 'icctivcly of anothermodification wherein two spring coils are employed,

Figures 10 and It are plan and sectional views respoctivcly ol a dishgashet employing two coils,

Figure 12 is a section through a still ditlerout form of gasketemploying three coils,

Fi rule 13 is a pcrspoctivc vicn of a pack-- ing abric in which a numberof coils are embedded,

F igure 14 is a perspective vieu oi" a modified form of gasket hereinthe core, coil, and easing are oval in cross scction and the casing islpgrmed of two metal plates,

igurcs l5 and 16 are plan and sectional views respectivclv oi'a modifiedt'orin oi gasket 2i Figures 17 end l8 illust'etc' moditicd forms ofouter casing,

Figure 19 is a section through a gasket employing the casing of Figure18,

higures 20, 2] and 22 are plan views of various forms of spring memberswhich may be used in lieu of the coil springs illustrated in thepreceding figures,

Fi ures 23 and 24 are end views of the mem ers shown in Figures 21 and22 respectively after such members have been bent, and

Figure 25 is an end view of the spring member of Figure 21 before suchmember has been bent.

Referrin first to the form of packing or gasket as s own in Figures 1 2and 5% of the drawing, is the central supporting eorc of metal, 2 is thespring sheathing imposed over the core and comprising a coil springwhich may be of any desired cross section, and which is preferablyapplied loosely over the core 1, and i5 is a casing of pliable material.which material may be either soft met at or of some fibrous non-metallictexture, .;Cll as. asbestos or rubber. 'lhe means for joining the twoends of the packing is illustrated in Figure 2. As here shown the oiposing ends of the casing 3 are tapered and the correspondingly taperedjoint ring 4 is applied. The joining ioint of the core 1 and sheathing 2are made to come at some point not in line with the joint in the casingO.

Whcn the parking or gasket is a plied as shown in Figure l, the approachof t 1e flange members 5 and t3 causcs thc deformation of the gasket tothe oval form shown. The opposite sides of the spring sheathing 2 arepressed aunirst the supporting core, and the resilie cy of this springsheathing or coil 2, lnill taius thc casing I; in tight cngagenn-nt n ththe llr-uy-w .7 and t cven though those mcinbcrs should rcccdv from eachother a certain uom f. The solid or resistant core 1 scrvcs to pswrcnt.L compressing of the sheathing 2 to is h an cxtcnt that it will notreturn to its rormal contour, and serves to hold thc coils i:- thcir"[1T()]PIPOSlll(ll1 n'hcn the prcssnrc is :ipplicd. 'lhe pliable outercovering 3 serves to rneloa gopd ontact with tbc surfaces to bc packed11d thc space bctu'ccn thc core 1 and rc ilicnt henthing 2 pcrmits ofthe dcsired amount of compresslon of such sheathing before it cont actswith the sup 'iortiizc corc. When the outercasing 3 is made of rnctatthc par-Ling is pcculiarly adapted f use with high mnperntures oryielding.

for chemical oontamers where the covering must be of a composition toresist the action of the chemical, or where the vessel containsbeverages or foods in the course of prepsration, and which for hygienicreasons ust be eriodically washed and scrubbed.

'gures 4 and 5 illustrate a modified construction wherein a coil 7 issubstituted for the solid core 1 in the other form of device. Undercertain conditions it is desirable to have the core somewhat yieldin andthis construction provides the desirec es 6 and? illustrate theinvention as applied to a disk gasket, the acking member being wovencontinuous. he core, flexible sheathing, and outer casin aresubstantially the same as in the form of evice of Figures 1, 2 and 3.

Figures 8 and 9 illustrate a form of gasket or packing wherein a pair ofindependent cores and coils are employed, the whole being p' pvided witha single outer casing 8.

mm a series of holding bolts are used, one of the coils lies on one sideof the bolts, and the other coil on the other side, the openings 9serving for the passage of the bolts.

Figures 10 and 11 illustrate another form of disk gasket wherein twoseparate coils are emplo ed with a single outer casing 10 arrangedsubstantially in cross section in the form of a figure 8. Figure 12illustrates in cross section still another form of gasket wherein threecoils are employed with an outer casing consisting of the two members 11and 12 interlocked at their outer edges. It is obvious that the numberof coils might be changed to suit conditions. Figure 13 illustrates alabricwhcrein the invention is employed, such fabric having oppositelydisposed sets of coils embedded in the body of the fabric, which bodymay be of any desired fibrous composition. Each of the coils employedhas the supporting core and the resilient sheathing imposed thcrcover.Figure 14 illustrates a form of the packing wherein the cross section isoral instcad of circular. and wherein two casing sheets 13 and 14 are lemployed instead of the single one shown in l Figures 1, 2 and 3. l

The gasket shown in Figures 15 and 16 l diilcrs from those heretoforedescribed. in that one side of the casing 15 is slotted and l the spacefilled as illustruurd in Figure 16 with some flexible material such asthe fi$l')(l. tos 16. This form of gn kct i espcciallv dci sirablc wherethe joint surfer-cs arc uncvcn or j have been cut or pitted. The jointulll be made by the soft mctal casing 15 as in the other forms ofdevice, but the imperfections in the urfaces or sheets will be lillcd bythe i asbestos Hi. in tead of providin! the casi in}: 15 with thecontinuou slot-- hown, such casin', may be provided uith a plurality ofdiagonal slots 17 as illustrated in Figure 17 1 if so desired. Theasbestos will press out through these diagonal slots and perform thesame function as uhcn used in connection with the slots shown in Figure15. are made diagonal so that they \.il.l over-lap each other, and givean asbestos engagin surface at all points throughout the lcugt of thegasket. Figure 18 illustrates a casing sheet rovidcd with two sets ofslots so a!" ranger that one set come on one side of the gasket, and theother set come on the other side. The application of this sheet to a gasket is illustrated in the cross section of Figure 19, the asbestosmembers 18 and 19 giving flexible sheathing surfaces on opposite sidesof the gasket.

Figures 20, 21 and 22 ilustrate blanks fromwhich sheathing may e cut totake the place of the coil spring 2 of igurcs l, 2 and 3, when it isdesired to have a sheathing somewhat more yielding and flexible thanthat formed by the coil sprinx. The blanks are bent in ap roxilnate Uiorm shown in Fi ures 23 an 24, and constitute flexible tu )BS of a veryresilient character. The section of the sheathing shown in Figure 21preferably of the form illustrated in Figure 25, being reduced inthickness at the central portion 20 and expanded at the end portions 21.

It will be apparent that all the types of gasket described employresilient means other than the rubber which has usuall been employedheretofore in order to furnis the necessary elasticity for givin a tightjoint. This is exceedingly desirab e as substances such as rubberdeteriorate in use, and their elastic properties are destroyed in thecourse of time. The gaskets herein described and illustrated areobviously not subject to this disadvantage as the resilient means is notafl'ccted by heat, and is thoroughly rotccted by the outer casing, sothat the paclzing is substantially as effective after long: use as whenfirst put into service. Various other utilities and advantages of theconstruction will be apparent to those skilled in the art.

Having thus described my invention and illustrated its use, what I claimas new and dc irc to secure by Letters Patent is the fol- 1. Incombination in a packing, a resistant core, a spring: sheathing over thecore,

and a casin; of pliable material over the sheathing.

2. in combination in a packing, a supporting: core, a resilientsheathing over the The slots porting core, a spring sheathing over thecore, and a casing of pliable metal over the sheathing.

5. In combination in a packing, a su porting core, a sprin sheathingover tie core. and a casing of soft metal over the sheathing.

6. In combination in a packing, a metal core, a siring sheathing overthe core, and a casing 01 pliable material over the sheathing.

7. .ln comljiination in a. packing, a resistant com, a coil springsheathing overthe core, and a casing of pliable material over thesheathing.

8. In combination in a packing, a Support ing core, a spring sheathingover the core, and a casing. of metal over the sheathing.

J. In combination in a packing, a supporting eon, a spring sheathingover the core, a casing of metal for the sheathing having an open spacealong the side and yielding inateria interposed between the open spaceand the sheet ling.

IQ. In combination in a packing, a supporting core, a spring sheathingover the core,

tween the open space and the sheet ing. 35

1-2. In combination in a packing, a substantially non-elastic core, aresilient sheathing over the core, and a comparatively soft coveringover the sheathing.

1.3. In combination in a packing, a resist- 40 ant core, a coil springsheathing ioosoly applied over the core, and a casing of metal over thesheathing.

In testimony whereof I have hereunto signed my name in the presence ofthe two 45 subscribed Witnesses.

WM. J. KNOX. Witnesses:

HARRY T. SMITH, ARNOLD WISEMANN.

a sup- 30

